ZGS model from TAILI is commonly required in South and North America. Is one of solution for power distribution with a more realiable and affordable cost for opeartion , it has advantage of small size and reasonable structure which can be installed for mounting outdoors on pads and can integrate different switching and protection schemes, making them more compact, dependable, and multifunctional, be-side of serviced for standard distribution line, it also service for railway,solar energy and wind plants. The Model choosing can be ring network type, terminal type and dual power supply type according to customer requirements . Like as optional it can be equipped with a TPC protection system, designed to handle capacitive earth fault currents in underground cables, en-suring the protection and safety of sensitive electrical loads.